Method and apparatus for making skived or bevel-edged articles from flexible material



Dec. 18, 1934. M E, DAv|$ 1,984,919

' METHOD AND APPARATUS FOR MAKING SKIVED OR BEVEL EDGED ARTICLES FROM FLEXIBLE MATERIAL Filed Jan. 26, 1931 5 Sheets-Sheet l INVENTOR I MAURICE 5 DA v/s.

ATTORNEYS Dec. 18, 1934. DAv|$ 1,984,919

METHOD AND APPARATUS FOR MAKING SKIVED OR BEVEL k EDGED AR TICLES'FROM FLEXIBLE MATERIAL Filed Jan. 26, 1931 5 Sheets-Sheet 2 INVENTOR MAuR/cE 5 DA v/s ATTORNEY Dec. 18, 1,934. El DAv|$ 1,984,919

METHOD AND APPARATUS FOR MAKING SKIVED on BEVEL EDGED ARTICLES FROM FLEXIBLE MATERIAL 5 Sheets-Sheet 3 INVENTOR Filed Jan. 26, 193 1 I ATTORNEYS 1366- 1934- M. E. DAVIS METHOD AND APPARATUS FOR MAKING SKIVED OR BEVEL EDGED ARTICLES FROM FLEXIBLE MATERIAL Filed Jan. 26, 1931 5 Sheets-Sheet 4 INVENTOR MAURICE f. DAV/.5

ATTORNEYS- M. E. DAVIS Dec. 18, 1934.

METHOD AND APPARATUS FOR MAKING SKIVED OR BEVEL EDGED ARTICLES FROM FLEXIBLE MATERIAL Filed Jan. 26, 1931 5 Sheets-Sheet 5 INVENTOR MAURME E. 0A v/$ ATTORNEY5 35 bodying 'thexinventiong.

Patented Dec. 18, 1934 A UNITE-D TA ATENTct-F ee,

METHOD AND APPARATUS Fort MAKING SKIVED 1 OR BEVEL-EDGED ARTICLES FROM FLEXIBLE MATERIAL Maurice E. Davis, Grand Rapids, Mich assignor to Harry E.- Moyses, New York; N; Y. Application January 26, 1931, Serial No. '511,29;1- 12 Claims. (01: 164 -63) This invention relates to'procedure -and appa-v on as at 14whereby elementsof different'shapes ratus for making =skivedpor bevel-edged articles may be replaceably mounted in the machine; such as-tirepatches,- shoe parts, etc., from flex-- A The t-elementil3 is of an outline corresponding iblesheet material such as rubberized fabric to that of the article to be produced, the element 5 stock. herein shown being shaped to form' an oval tire .5 Heretoforein the manufacture of such arpatch'such as illustrated in Figure'fi. The eleti'clesit has been customary to punch the arment 13 is-ho1lowand open at its top providing ticle in therdesired outline from thesheet maa receptacle-for a resilient padsuch as a" sponge terial. This operation is performed OIlDllIlCh rubber pad 13 secured therein and shaped-to presses, referred to in the art as"c1icking maprovide-a cavity intowhich aportion of the 10 chines. The next operation is skiving-the articles stock may -be depressed'with theedge'of thecavity or forming a beveled or feather edge thereon; this defining the 'outlineof thearticle; being performed in-special skivinggmachines. The carriage 11 is provided with a -C-shaped Th general purpese/efthep t ve t-i n bracket l5 (seeFi'gure-2) the upper portion of is pr vi a. m h r andl ppara s by whieh which overhangs element 13 and'which has there- 15 such articles may beeffectively cut to shape from in a plunger 16'slidab1e toward andfr0m- 1 the-sheet material and sk ved'asa sin l peM- ment 13 and carryinga clamp 17 on its-lower end, tion. this clamp being supported a"bearing 18re- M re Particularly the invention s for its movably secured'upon the plunger'lfi' as by being pu p th -p a t d nd ans threaded'thereon at l9-whereby clamp members w by Sheet Stock maybe clamped with a such as 17' of" different shapes and sizes-are redepressedportion of theoutline of the article and placeable in the'm'achi A I a cutter actuated 12 1 predetermined p As bestrshown in Figure 4; the forming-element about the clamped oc t Out t pi e l3is dish-shaped and the clamp 17 is convex, fromof said outline and-beveled or skivedeat-its wh b flexible t k; S' Iampd between the 25 edge.-. p members" will be held in concavo-convex shape. Theforegoing and. other purposes ofthe in- The?operatjng-3p1unger-16;. mayt have---a,-1. raek v i n'e e -m h a dsby the 16 formed thereon withwhich a -pinion 20-(see me hod: r -:im p y s raW Figurerz) journaled on bracket 15 is-meshed,- said me h The invention iS'IIOt limited, however, to pinionibeing operableby 'suitab1e means-such-as '30 the particular; machineor to theparticularmetha l r 21 secured thereto, O z hown'and described herein. For "rotatingzthe'- forming elementand clamp Of uthe; accompanyin drawings, q 17," a friction wheel"22 'is provided; the' periph- Figllle 1 is a from elevation of a c e e f ery of the forming element 13 being held inrengagemen't with said friction' wheel 'bymeans of F u S- 'Bn r e ft yielding-means-such assprings 23 which tend of-Fisure -b the full; line pos h ap fto'urge-thecarriage,ll toward the "friction wheel beingtt po i i n t reef when the article is 22. The friction wheel 22 may be mounted upon being cut; to. shape and'thedotted line positions ashaft 2A,.upon which-is a bevel gearF-25meshed indicat t e re a ntheparts be e withabevel gear 26' on a shaft 27' which may be 140 iop t driven by a'pulleyr28. Thejfriction wheel 22is u 15a Sectional p 3-3 of preferably arranged to be clutched to shaft -24 Figure -1; 1 when the cutting and skiving =0fthearticle= is Fi ur ri seetioneen- Figure effected by'a clutch 29 operable automatically Figure 5 isa-isectionron1ine-5-5;of.-;Figure 1'; in a manner which will later be explained. g .45 and: The cutting is shown at'30 and preferably Figure-1611sanelevafionrpartly-in t f a comprises a rotary cutting disc WhiChgil'l operatire'patch'madein accordance with the-inventime position is adapted'to overlie the edge'of tion; I A the former '13 so as to cut angularly'through Referring-to-thedrawings, the numerallO desthe margins of the stock S which extend angu- 50 ignates asuitable support upon which is slidably lai'lynfrom the former 13 due to the -shaping mounted-a carriage 11. The carriage 11 has J'ourthereof in the forming element, the lineof cut naled-thereina rotatable shaft: 12 (see Figure 4) being where the dotted line indicating 'the'inwhichiisaadaptedwremoyablyitoxreceive a rotary visible edge of" the former'13is shownin'Figure 5 forming elementrwwhichma-y betthreaded'there- 4. Since the' pointat which friction: wheel..22

engages the forming element is a fixed point at which the cutting may be performed, the cutter 30 is arranged when in operative position to engage with the forming element adjacent this point.

The cutter 30 is secured upon a shaft 31 arranged to be driven by a motor 32 through suitable gearing housed at 33. The motor is mounted on an arm 34 adapted to rock on a shaft 35 secured in a support 36 angularly adjustable upon a slidable plate 37 upon which it may be secured in adjusted positions by bolts 38, 38 extending through arcuate slots 39, 39 in member 36. Plate 37 is vertically adjustable upon a standard 40 by suitable means such as a screw 41 journaled at 42 in standard 40 and threaded through a member 43 secured to the rear side of plate 3'7. Standard 40 is provided with a carriage 40 transversely slidable upon a carriage 40 which is longitudinally slidable upon the support 10 whereby the cutter is universally adjustable to various angles and to various planes for operating in association with various formers 13.

Carriage 40*- may be operated by means of a screw44 journaled at 44 on carriage 40 and threaded through a member 45 secured to carriage 40 and carriage 40 may be operated by a screw 46 journaled on support 10 and threaded through a member 47 secured to carriage 40 A lever 48 may be provided for swinging the knife to and from operative relation respecting the former 13 and also for operating clutch 29 as by means of a yielding link 49 pivotally connected to arm 36 (see Figure 5) at 49 and having a universal connection at 49 with a lever 50 pivoted on support 10 at 51 and having a clutch shifting yoke 52 thereon.

In order to hold the stock S firmly in position adjacent the cutter, a presser 53 is provided for pressing the stock down against the former 13 in advance of the cutter (see Figure 3). As best shown in Figure 4, the presser 53 is pivoted upon a bracket 54 at 55 and is yieldingly urged against the stock by means of a spring 56 on a rod 57 pivoted on bracket 54 and on which the pressure of the spring may be adjusted by a knurled nut 58 threaded on rod 57.

In operation, the stock S'either in short pieces or lengths are placed on the former 13 and pressed thereon by the clamp 1'? so as to assume the shape of the former and with the margins about the former extending angularly therefrom.

The knife 30 is then swung down into operative relation with the former, the presser 53 engaging the stock in advance of the knife and rotation of the former and clamp with the work is effected by engagement of clutch 29. The former is rotated by the wheel 22, the carriage 11 moving to and fro as required to present the perimeter of the cavity in the former to the edge of the knife whereby the stock projecting from the cavity is progressively cut off with a skive or bevel cut.

The apparatus is so designed as to produce relative movement of the knife and former whereby the knife will cut progressively about the perimeter of the former. As illustrated in the drawings (Figure 3) the knife is caused to rotate outwardly of the advancing edge of the former 3.

By the foregoing procedure and with the use of the above-described apparatus, the operations of cutting and skiving articles from sheet material are accomplished simultaneously in a simple, effective way.

Modifications of the invention obviously may be resorted to without departing from the spirit thereof or the scope of the appended claims.

What is claimed is:-

1. That method of cutting skived or beveled edged articles from flexible sheet material which comprises depressing the same into a cavity of the outline of the desired article and clamping the depressed portion in the cavity with the margins of the depressed portion of the sheet extending angularly out of the edges of the cavity and cutting the margins of the sheet from the depressed portion progressively all about the perimeter of said cavity by a cut directed outwardly thereof and substantially in a plane parallel with that of the edge of the cavity to form a skived or beveled edge.

2. That method of making skived or beveled edged articles from flexible sheet material comprising forming a portion of the sheet material to concavo-convex shape to the outline of the article and cutting the remainder of the sheet from the article progressively all about the outline thereof by a cut directed outwardly of said outline in the plane of the outline of the article whereby the edges of the article will be skived.

3. Apparatus for making skived or beveled edged articles from flexible sheet material which comprises means for forming a portion of the sheet material with a depression therein having the outline of the desired article, means for rotating the material so formed so that the outline of the depressed portion will pass a fixed point, and means for cutting the remainder of the sheet material from said article adjacent said fixed point, said cutting means being arranged to out said sheet material in a plane at an angle to the marginal portion of the dished material.

4. Apparatus for making skived or beveled edged articles from flexible sheet material which comprises means for forming a portion of the sheet material in dished shape to the outline of the article, said means comprising a former having a cavity therein and a clamp for depressing the material into said cavity, means for rotating said means so that the outline of said cavity will pass a fixed point, and means for cutting the remainder of the sheet material from said article adjacent said fixed point, said cutting means being arranged to out said sheet material in a plane at an angle to the marginal portion of said cavity.

5. Apparatus for making skived or beveled edged articles from flexible sheet material which comprises means for forming a portion of the sheet material in dished shape to the outline of the article, said means being rotatable and bodily shiftable, means for rotating and bodily shifting said means so that the outline of the depressed portion of the material will pass a fixed point, said rotating and shifting means comprising a driving element engaging the periphery of said forming means, means for yieldingly holding the periphery of said forming means in engagement with said driving element, and means for cutting the remainder of the sheet material from the depressed portion of said material adjacent said fixed point, said cutting means being arranged to out said sheet material in a plane at an angle to the marginal portion of the depressed material.

6. Apparatus for making skived or beveled edged articles from flexible sheet material which comprises means for forming a portion of the sheet material in dished shape to the outline of the article, means for rotating said forming means so that the outline of the depressed portion of the material will pass a fixed point, and means for cutting the remainder of the sheet material from said depressed portion adjacent said fixed point, said cutting means being arranged to out said sheet material in a plane at an angle to the marginal portion of said depressed material, said cutting means comprising a rotary cutter and means for swinging said cutter to and from operative relation with said forming means.

7. Apparatus for making skived or beveled edged articles from flexible sheet material which comprises means for forming a portion of the sheet material in dished shape to the outline of the article, means for rotating said forming means so that the outline of the depressed portion of the material will pass a fixed point, and means for cutting the remainder of the sheet material from said depressed portion adjacent said fixed point, said cutting means being arranged to out said sheet material in a plane at an angle to the marginal portion of the depressed material, said cutting means comprising a rotary cutter and means for swinging said cutter to and from oper-' ative relation with said clamping means and for controlling the operation of said rotating means.

8. Apparatus for making skived or beveled edged articles of flexible sheet material comprising means for depressing a portion of the sheet material to the outlineof the article with the margins thereof extending angularly, and means for progressively cutting the remainder of the sheet away from said portion by a cut directed outwardly all about the outline of the depressed material and substantially in a plane at an angle to said margins of the depressed material whereby the resulting article will have a skived or 40 beveled edge.

prising a cutter in a plane substantially parallel to the plane of the outline of said cavity and so associated with said cavity as to cut the material at one point on said outline to provide a beveled edge on the material, and means for causing relative movement of said clamping means and said knife progressively to out said material in one direction entirely about said cavity.

10. The combination in apparatus for the purpose described of means for clamping a sheet of flexible material in a cavity of a determinate outline, and means for cutting said material comprising a cutter in a plane substantially parallel to the plane of the outline of said cavity and so associated with said cavity as to cut the material at one point on said outline to provide a beveled edge on the material, and means for causing relative movement of said clamping means and said knife progressively to out said material in one direction about said cavity, said knife having a traveling cutting edge and being so associated with said clamping means as to travel outwardly of said outline of the cavity with respect to the material at the point of cutting.

11. That method for makingskived or beveled edged articles from fiexible sheet material which comprises depressing said material in a cavity of predetermined outline, engaging a knife with the material at one point on said outline with the knife in a plane substantially parallel to the plane of said outline, and progressively cutting said material with said knife from said point in one direction entirely about the outline of said cavity. 12. That method for making skived or beveled edged articles from flexible sheet material which comprises depressing said material in a cavity of predetermined outline, engaging a knife with the material at one point on said outline with the knife in a plane substantially parallel to the plane of said outline, and progressively cutting said material with said knife from said point in one direction about the outline of said cavity, the knife being so applied as to cut in a direction outwardly of the cavity all about said outline.

MAURICE E. DAVIS. 

